Cryogenic CMOS Cameras for High Voltage Monitoring in Liquid Argon

Abstract

The prevalent use of large volume liquid argon detectors strongly motivates the development of novel readout and monitoring technology which functions at cryogenic temperatures. This paper presents the development of a cryogenic CMOS camera system suitable for use inside a large volume liquid argon detector for online monitoring purposes. The characterisation of the system is described in detail. The reliability of such a camera system has been demonstrated over several months, and recent data from operation within the liquid argon region of the DUNE 35tcryostat is presented. The cameras were used to monitor for high voltage breakdown inside the cryostat, with capability to observe breakdown of a liquid argon time projection chamber in situ. They were also used for detector monitoring, especially of components during cooldown.

arXiv commentto be submitted to JINST

References in corpus (7)

• A Proposal for a Three Detector Short-Baseline Neutrino Oscillation Program in the Fermilab Booster Neutrino Beam
• Liquid noble gas detectors for low energy particle physics
• The Liquid Argon Purity Demonstrator
• Optical Readout of a Two Phase Liquid Argon TPC using CCD Camera and THGEMs
• Experimental study of electric breakdowns in liquid argon at centimeter scale
• Summary of the Second Workshop on Liquid Argon Time Projection Chamber Research and Development in the United States
• Development of a camera casing suited for cryogenic and vacuum applications

Cited by in corpus (2)

• Construction of precision wire readout planes for the Short-Baseline Near Detector (SBND)
• Design and performance of a 35-ton liquid argon time projection chamber as a prototype for future very large detectors